Texan Streamline Processing (TSP) Eliminating the intermediate step in converting Texan raw data to standard SEG-Y. Steven Harder Presented at the Active Source Data Management Workshop Jan , 2014.

Data Flow in TSP Read metadata dasfile, shot, geometry files Read 1 Texan raw file Convert & Write 1 trace w/ timing corrections, geometry and offsets to each SEG-Y file

The Big Surprise TSP runs approximately 30 times faster (clock time) than the two-step 125segy/texan2segy combination. The primary reason for this speed is that both data input and output are read and written in large blocks. Input is read one 528-byte page at a time. Output is written one trace with header at a time.

Tape vs. Disk I/O Sequential vs. Random Access

Advantages of TSP Speed: ~30 times faster than two-step methods using sequential access. Allows for the additional of traces to existing SEG-Y files as raw data become available. Uses a relational data with natural organization of data. Uses either rectangular and spherical coordinate systems.

Future Directions Output both SEG-Y and PH5 formats simultaneously? Raw Data Dasfile Geometry Shot or Event File TSP Standard SEG-Y files Ready to plot PH5 file Ready to archive ?? TSP is available at